﻿// Copyright 2005, 2006 - Morten Nielsen (www.iter.dk)
//
// This file is part of SharpMap.
// SharpMap is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// SharpMap is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public License
// along with SharpMap; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 

namespace ProjNet.CoordinateSystems.Transformations
{
    /// <summary>
    /// Flags indicating parts of domain covered by a convex hull. 
    /// </summary>
    /// <remarks>
    /// These flags can be combined. For example, the value 3 
    /// corresponds to a combination of <see cref="Inside"/> and <see cref="Outside"/>,
    /// which means that some parts of the convex hull are inside the 
    /// domain, and some parts of the convex hull are outside the domain.
    /// </remarks>
    public enum DomainFlags : int
    {
        /// <summary>
        /// At least one point in a convex hull is inside the transform's domain.
        /// </summary>
        Inside = 1,

        /// <summary>
        /// At least one point in a convex hull is outside the transform's domain.
        /// </summary>
        Outside = 2,

        /// <summary>
        /// At least one point in a convex hull is not transformed continuously.
        /// </summary>
        /// <remarks>
        /// As an example, consider a "Longitude_Rotation" transform which adjusts 
        /// longitude coordinates to take account of a change in Prime Meridian. If
        /// the rotation is 5 degrees east, then the point (Lat=175,Lon=0) is not 
        /// transformed continuously, since it is on the meridian line which will 
        /// be split at +180/-180 degrees.
        /// </remarks>
        Discontinuous = 4
    }
}
